Composite shuttle



May 12, 1942. D'ARCY COMPOSITE SHUTTLE Filed April 11, 1941 QFIIII Mm :wsnu-ruw Patented May 12, 1942 COMPOSITE SHUTTLE John A. D'Arcy, Lawrence, Mass., assignor to U. S. Bobbin & Shuttle Company, Providence, It. 1., a corporation of Rhode Island Application April 11, 1941, Serial N0. 388,110

9 Claims.

This invention relates to shuttles used in looms and particularly to what are known as automatic or self-threading shuttles.

Such shuttles are made up of a body in which there is a bobbin recess in which the bobbin is located and is generally held by jaws in what I will call the back of the shuttle. At the front of this bobbin recess there is a threading block in a threading block recess, the block generally being made of metal and having certain irregular longitudinal threading passages extending down from the top and also having a nose under which the thread goes. From this nose there is a slot extending back to the eye in the side of the shuttle or else the slot is made on one side by a wall of the recess and on the other side by a wall of the block.

This slot becomes part of and merges in the shuttle eye which passes through what I will call the eye side of the shuttle. Through this eye side there is a bolt hole for a bolt by which the threading block is held in place; a cutter hole from this bolt hole through which a cutter in an automatic loom passes so as to seize or cut, or both, the thread on the bobbin which is being pushed out on transfer; and there is another long hole or slot through which a filling feeler passes so as to touch the bobbin.

For many reasons, it has been found that shuttles made of certain kinds of wood with the grain running lengthwise are the most satisfactory but the facts that the eye and that the various holes and slots are on the eye side and the fact that wood has a grain and tends to split along the grain have made re-inforcing desirable. This has resulted in the use of a facing of fiber or of some similar tough material, which has no grain, cemented along the side and being provided with eyes and holes corresponding with those in the wooden part of the shuttle.

However, along the eye side from almost end to end there is a thread groove in which the thread is supposed to run so that it will not be pinched by the shuttle binder and this groove makes the fiber facing very thin along its bottom part and weakens it particularly between the eye and the cutter hole. This weakening is un fortunate at that particular place because often the shuttle is so strongly pressed by the shuttle binder that it actually either closes up the threading slot in the threading block or splits the wood, and the fiber also, between the eye and the cutter hole.

Another very serious difiiculty is the fact that as the thread runs out of the shuttle eye over a Ill) metal thread bearing pin which may be held in the block or in the wood or both, it cuts a fine groove at the edge of the fiber facing in the bottom of the thread groove which may extend back as far as the bolt hole or even to the cutter hole and this groove catches the thread and either breaks it or causes unevenness in the weave, or tangles, it, or in the case of rayon, it may catch and break or pull out one or two of the very fine filaments causing a. shiner or a defect in the cloth.

The purpose of this invention is to provide a re-inforcement or a re-inforcing plate of a size, material and make which will strengthen the shuttle at the weak part and will allow a deeper thread groove to be made not only by not weakening the shuttle structure but by actually strengthening it.

In the drawing Fig. l is a plan view, partly broken, of a shuttle of my construction.

Fig. 2 is an elevation of one end of the shuttle shown in Fig. 1 from the eye side or as from the bottom of Fig. 1.

Fig. 3 is an enlarged sectional view as on the line 3-3 of Fig. 2.

Fig. 4 is an enlarged sectional view as on the line 4-4 of Fig. 1.

Fig. 5 is a sectional View as on the line 55 of Fig. 2.

Fig, 6 is a view similar to Fig. 3 of a modification.

Fig. 7 is an isometric View of a re-inforcing plate of fiber.

In the drawing, S is a shuttle with the usual front pointed tip Ml and back pointed tip 4!.

W represents the body of the shuttle which is usually of wood. 9 represents the top; H), the bottom reinforced by fibre l2; 3, the side where the eye is located and 4, the other side. The bobbin recess is repi ed by 5, cutter hole by 6, threading block re my I, and the connection between this and the eye I is indicated by 8 while the hole for the belt A which holds threading block B in the threading block recess I is indicated by 2,

In the threading block B are the usual irregularly shaped threading passages 20 for thread T from a bobbin D and in front is a nose 2| from which the edge 22 runs substantially parallel with passage 28 to the eye I in the side 3 of the shuttle. There is a front thread bearing pin 24 extending vertically partly across the bottom part of the front part 25 of the front part of the eye I and there is another thread bearing pin 23 which extends across the back of the eye I, these two pins defining the front and back of the eye I.

A fiber facing F is attached to the eye side 3 of the shuttle as by cement 30 and is provided with an eye hole 3| which registers with and coincides substantially with the eye l in the Wood although slightly longer, the back part of this 35 being at one end of the thread groove 13. Back of this is a bolt hole 32 which coincides with the head 42 of bolt hole 2 and cutter hole 36 which coincides with cutter hole 6 and feeler slot 39 which coincides with a similar slot 38 in the wood W.

Fiber facing F is bent around at 58 and 59 to follow the curve and shape of the wood W.

P is a rectangular plate of fiber or similar tough material having no grain which is set in a plate recess I l and preferably held firmly in place as by cement l5. In this plate P is a thread groove l3 which is somewhat deeper than groove 33 and which may slope from the edge 34 of the cutter hole down across the end of the bolt hole to a point at 35, a short distance back of the thread bearing pin 23.

The bottom of groove l3 at 35 is preferably inside the outer face of pin 23, so that the thread T cannot strike the edge of plate P but will lay along the bottom of groove 43 at a very acute angle.

However as shown at 50 in Fig. 6, the corre sponding part at the end of a groove 5| can be rounded but outside a pin 52 corresponding with pin 23.

As shown in Fig. 6 instead of using a rectangular plate such as P shown in Fig. 7, which is a separate piece of fibre or other suitable material, I may use a fibre facing G from which there is a boss or projection l8 which enters into a suitable recess l9, this boss being a part of and integral with the part I! of the member G which serves as a facing for the rest of the eye side of a shuttle.

The thread pins such as 23 and 24 can be dispensed with if the material of the plate such as P, G, H, or K is hard enough to stand the friction of the thread.

My preferred construction is a separate plate :4

which may be substantially rectangular, oval or of any other suitable shape made of what I will call fibre, namely the filaments or fibres of cotton chemically or otherwise treated and pressed together.

My re-inforcing plate as a separate member, with or without the fiber facing, or as part of the fiber facing does not weaken the construction but does strengthen it and of course it can be used with a shuttle in which there is no cutter ii hole and it might be used in a shuttle in which there was no threading block bolt hole.

I claim:

1. The combination in a self-threading composite shuttle for weaving; of a wooden body in which is a bobbin recess from which a cutter hole extends through the side wall, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a bolt hole through and a plate recess in the eye side between the cutter hole and the shuttle eye and a thread bearing pin which extends across one end of the shuttle eye; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye and a thread bearing pin carried by the block and which extends across one end of the shuttle eye; a fiber facing cemented on the eye side of the shuttle and having an eye hole which registers with the iii) shuttle eye in the wooden body, a bolt hole and a cutter hole which registers with the cutter hole in the Wooden body together with a thread groove extending from in front of the shuttle eye substantially the length of the shuttle and extending as a slot through the fiber between the eye pin in the shuttle block and the cutter hole across the attaching bolt hole; together with a reinforcing plate of fiber extending from the cutter hole to the shuttle eye, the plate being sunk in the plate recess in the wood and having a thread groove which is in line with the thread groove in the facing but which is deeper, the bottom front edge of its groove being inside the outside face of the back thread bearing pin.

2. The combination in a self-threading composite shuttle for weaving; of a wooden body in which is a bobbin recess from which a cutter hole extends through the side wall, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a bolt hole through and a plate recess in the eye side between the cutter hole and the shuttle eye; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; thread bearing pins at each end of the eye: a fiber facing cemented on the eye side of the shuttle and having an eye hole which registers with the shuttle eye in the wooden body, a bolt hole and a cutter hole which registers with the cutter hole in the wooden body together with a thread groove extending from in front of the shuttle eye substantially the length of the shuttle and extending as a slot through the fiber between the eye pin in the shuttle block and the cutter hole across the attaching bolt hole; together with a re-inforcing plate of fiber extending from the cutter hole to the shuttle eye, the plate being sunk in the plate recess in the wood and having a thread groove which is in line with the thread groove in the facing but which is deeper, the bottom front edge of its groove being inside the outside face of the back thread bearing pin.

3. The combination in a self-threading com posite shuttle for weaving; of a wooden body in which is a bobbin recess from which a cutter hole extends through the side wall, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a bolt hole through and a plate recess in the eye side between the cutter hole and the shuttle eye; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; a fiber facing cemented on the eye side of the shuttle and having an eye hole which registers with the shuttle eye in the wooden body. a bolt hole and a cutter hole which registers with the cutter hole in the wooden body together with a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; together with a re-lnforcing plate of fiber extending from the cutter hole to the 1 shuttle eye, the plate being sunk in the plate rethe eye side between the cutter hole and the shuttle eye; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; a facing of a different material cemented on the eye side of the shuttle and having an eye hole which registers with the shuttle eye in the body, a bolt hole and a cutter hole which registers with the cutter hole in the body together with a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; together with a re-inforcing plate of a different material from the shuttle body extending from the cutter hole to the shuttle eye, the plate being sunk in the plate recess in the body under the facing and having a thread groove which is in line with the thread groove in the facing.

5. The combination in a self-threading shuttle for weaving; of a body in which is a bobbin recess from which a cutter hole extends through the side wall, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, vertical thread bearing pins at the outer front and back of the shuttle eye, a plate recess in the eye side between the cutter hole and the shuttle eye and a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; together with a re-inforcing plate of a different material from the shuttle body extending from the cutter hole to the shuttle eye, the plate being sunk in the plate recess in the body and having a thread groove which is in line with the thread groove in the shuttle body, the bottom front edge of its groove being inside the outside face of the back thread bearing pin.

6. The combination in a self-threading shuttle for weaving; of a body in which is a bobbin recess, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a plate recess in the eye side adjoining the back side of the shuttle eye, thread bearing pins in the shuttle eye and a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; together with a re-inforcing plate of a different material from the shuttle body sunk in the plate recess in the body and having a thread groove which is in line with the thread groove in the shuttle body, the bottom front edge of its groove being inside the outside face of the back thread bearing pin.

7. The combination in a self-threading shuttle for weaving; of a body in which is a bobbin recess which connects through a passage with a shuttle eye in the side, vertical thread bearing pins at the outer front and back of the shuttle eye, a plate recess in the eye side adjoining the back side of the shuttle eye, and a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; with a reinforcing plate, of a different material from the shuttle body, sunk in the plate recess in the body and having a thread groove which is in line with the thread groove in the shuttle body, the bottom front edge of its groove being inside the outside face of the back thread bearing pin.

8. The combination in a self-threading composite shuttle for weaving; of a wooden body in which is a bobbin recess from which a cutter hole extends through the side wall, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a bolt hole through and a plate recess in the eye side between the cutter hole and the shuttle eye; a shuttle block in the shuttle block recess including threading passages connecting with and forming part of the shuttle eye; a vertical thread bearing pin at the back of the eye; a fiber facing cemented on the eye side of the shuttle and having an eye hole which registers with the shuttle eye in the wooden body, a bolt hole and a cutter hole which registers with the cutter hole in the wooden body together with a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; together with a re-inforcing plate of fiber extending from the cutter hole to the shuttle eye, the plate being sunk in the plate recess in the wood under the facing and having a thread groove which is in line with the thread groove in the facing.

9. The combination in a self-threading composite shuttle for weaving; of a wooden body in which is a bobbin recess, and in front of which bobbin recess is a shuttle block recess which connects through a passage with a shuttle eye in the side, a vertical thread bearing pin at the outer front and back of the shuttle eye, bolt hole through the shuttle and a plate recess in the eye side back of the shuttle eye, a shuttle block positioned in the shuttle block recess and having threading passages connecting with the shuttle eye, a fiber facing cemented on the eye side of the shuttle and having an eye hole which registers with the shuttle eye in the wooden body, a bolt hole and a thread groove extending from in front of the shuttle eye substantially the length of the shuttle; with a re-inforcing plate of fiber extending back from the shuttle eye, the

plate being sunk in the plate recess under the facing and being cemented to the wood, and having a thread groove which is in line with and forms part of the thread groove in the facing. JOHN A. DARCY. 

